package com.gulimall.product.service.impl;

import com.common.constant.ProductConstant;
import com.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.gulimall.product.dao.AttrGroupDao;
import com.gulimall.product.dao.CategoryDao;
import com.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.gulimall.product.entity.AttrGroupEntity;
import com.gulimall.product.entity.CategoryEntity;
import com.gulimall.product.service.CategoryService;
import com.gulimall.product.vo.AttrRespVO;
import com.gulimall.product.vo.AttrVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.common.utils.PageUtils;
import com.common.utils.Query;

import com.gulimall.product.dao.AttrDao;
import com.gulimall.product.entity.AttrEntity;
import com.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    AttrAttrgroupRelationDao attrAttrgroupRelationDao;
    @Autowired
    private AttrDao attrDao;
    @Autowired
    private CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), new QueryWrapper<AttrEntity>());

        return new PageUtils(page);
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void saveAttr(AttrVO attr) {

        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        // 保存基本数据
        this.save(attrEntity);
        // 保存关联关系 销售属性不需要保存关联关系
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {

            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
        }


    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {

        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!org.apache.commons.lang.StringUtils.isEmpty(key)) {
            // attr_id  attr_name
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        List<AttrRespVO> respVos = records.stream().map((attrEntity) -> {
            AttrRespVO attrRespVo = new AttrRespVO();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrgroupRelationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrgroupRelationEntity != null && attrgroupRelationEntity.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectOne(new QueryWrapper<AttrGroupEntity>().eq("attr_group_id", attrgroupRelationEntity.getAttrGroupId()));
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            CategoryEntity categoryEntity = categoryDao.selectOne(new QueryWrapper<CategoryEntity>().eq("cat_id", attrEntity.getCatelogId()));
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }


            return attrRespVo;
        }).collect(Collectors.toList());
        // 把新的数据传送过去
        pageUtils.setList(respVos);
        return pageUtils;

    }

    @Override
    public AttrRespVO getAttrInfo(Long attrId) {

        AttrRespVO attrRespVo = new AttrRespVO();

        // 基本属性查询
        AttrEntity attrEntity = attrDao.selectById(attrId);
        BeanUtils.copyProperties(attrEntity, attrRespVo);

        // 组
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {

            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (attrAttrgroupRelationEntity != null) {
                attrRespVo.setAttrGroupId(attrAttrgroupRelationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());

                if (attrGroupEntity != null) {
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

        }

        // 分类
        CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
        if (categoryEntity != null) {
            attrRespVo.setCatelogId(categoryEntity.getCatId());
            attrRespVo.setCatelogName(categoryEntity.getName());

            // 分类整个路径
            Long[] catelogPath = categoryService.findCatelogPath(attrEntity.getCatelogId());
            attrRespVo.setCatelogPath(catelogPath);
        }


        return attrRespVo;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateAttr(AttrVO attr) {

        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);

        // 修改分组
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {

            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Integer count = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                // 修改
                attrAttrgroupRelationDao.update(relationEntity, new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            } else {
                // 新增
                attrAttrgroupRelationDao.insert(relationEntity);
            }
        }


    }

    /**
     * 根据分组Id查找所有关联的所有的属性
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {

        List<AttrEntity> attrEntities = new ArrayList<>();

        // 查出关联表中的数据
        List<AttrAttrgroupRelationEntity> relationEntities = attrAttrgroupRelationDao
                .selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = new ArrayList<>();

        // 把属性Id加入到集合中
        relationEntities.forEach(relationEntity -> {
            attrIds.add(relationEntity.getAttrId());
        });

        // 查询属性
        if (!CollectionUtils.isEmpty(attrIds)) {
            attrEntities = attrDao.selectBatchIds(attrIds);
        }


        return attrEntities;
    }

    @Override
    public PageUtils getNoRelation(Map<String, Object> params, Long attrgroupId) {
        // 1、当前分组只能关联自己所属分类里面的所有属性
        // 先查询出当前分组所属的分类
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2、当前分组只能关联别的分组没有引用的属性
        // 2.1当前分类下的所有分组
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> attrGroupIds = attrGroupEntities.stream().map(attrGroupEntity1 -> {
            return attrGroupEntity1.getAttrGroupId();
        }).collect(Collectors.toList());
        // 2.2这些分组关联的属性
        List<AttrAttrgroupRelationEntity> relationEntities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", attrGroupIds));
        List<Long> attrIds = relationEntities.stream().map((relationEntity) -> {
            return relationEntity.getAttrId();
        }).collect(Collectors.toList());
        // 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        return new PageUtils(page);

    }


}